Raid Preparation
You will need a tank (e.g. Sirius) protected against magic attacks - Magic Barrier, Con Impeto, Maestoso, and Spell-Break Rhythm skills. The tank should also have Valeria for healing or Elisa for removing status (see below).

Have the common debuffers (e.g. Lisa, Idge, and Leonele) available as well to reduce DEF Rating. Viki can quickly inflict Burn status as soon as possible to reduce Max HP and keep Abyss from using skills. Damage dealers should have several area damage skills ready with anti-demon weapons.

A. Roaming Monsters
There are some monsters roaming in the area. Kill them if they get in the way. They deal melee splash damage and have 2 area melee damage skills.

White Keeper of Fury

Level
ATK Rating
DEF Rating

140
72
73

Size
ATK
DEF

Medium
60,480
216

HP/Element
Penetration
Immune/RES

1,555,200
60 0 ❆ 0 0 ♥ 0
0 40 ❆ 40 40 ♥ 50

Black Keeper of Fury

Level
ATK Rating
DEF Rating

140
73
72

Size
ATK
DEF

Medium
62,208
179

HP/Element
Penetration
Immune/RES

1,555,200
60 0 ❆ 0 0 ♥ 0
0 40 ❆ 40 40 ♥ 50

B. Furious Abyss
The boss, Furious Abyss, waits in the middle of the chamber. Move the tank up to provoke him. The boss has a lot of HP, so Viki should summon and charge Tenderaiser to inflict Burn status as soon as possible.

Furious Abyss

Level
ATK Rating
DEF Rating

150
78
78

Size
ATK
DEF

Large
30,600
338

HP/Element
Penetration
Immune/RES

182,400,000
80 80 ❆ 80 80 ♥ 80
90 90 ❆ 70 70 ♥ 70

Normal attacks of Furious Abyss deals magic splash damage and can inflict Drain status, reducing HP continuously and disabling item (potion) usage. Let Valeria use Restore or Satisfy skill on the tank periodically. Alternatively, let Elisa use Lv.10 Depoison skill to remove the status. If it is still not enough, consider using Progressive Health Fillers and Acorchado Pet for extra healing.

After some normal attacks, Furious Abyss uses Desatino skill, which deals mental damage and inflicts Stun status to 12 targets within a rectangular area. When faced with close targets, he can also use Furor skill, which deals fire damage and inflicts Burn status to 36 targets within a large circular area.

Do not use Whole Cancellation skill on him, as he will ignore it and then use a skill in retaliation. Let Viki's Tenderaiser keep him in Burn status instead.

Periodically, Furious Abyss will say: Get furious, my soul. and summon 2 or more Furious Souls. (The lower his HP, the more souls he will summon.) A zone notice will then say: You must defend against the Furious Soul!

Furious Soul

Level
ATK Rating
DEF Rating

150
78
77

Size
ATK
DEF

Small
81,090
164

HP/Element
Penetration
Immune/RES

1,364,899
30 0 ❆ 0 0 ♥ 0
60 0 ❆ 0 0 ♥ 80

Furious Souls will appear next to Furious Abyss and move towards the inactive Phantoms of Abyss at the sides. Notice they have no RES against fire, ice, or lightning, and their DEF is fairly low. Kill them quickly.

If a Furious Soul reach the inactive phantom, an active Phantom of Abyss will appear next to Furious Abyss. Phantoms of Abyss have the same attacks and skills as Furious Abyss.

Phantom of Abyss

Level
ATK Rating
DEF Rating

130
68
68

Size
ATK
DEF

Large
27,000
210

HP/Element
Penetration
Immune/RES

7,341,599
80 80 ❆ 80 80 ♥ 80
50 90 ❆ 70 70 ♥ 70

When the boss summons too many souls to kill, the damage dealers should keep their area attack skills ready, and activate them on the phantoms as soon as possible.

When the boss is dead, a zone notice will say: Treasure chest has appeared. Click on the chest to start the roulette.